In the original book, a small accountant who didn't even have a name turned out to be a time traveler with economic expertise. She made it clear in advance: Jia's family will be defeated and the building will collapse. Saving Jia's family is tantamount to committing suicide. So she chose to follow the bottom line of "not betraying her master's family" and frantically found a way out for herself. Opening a shop to make money, poaching key servants, buying land deeds, and reporting on corrupt officials, every step is a step on the moral gray line of the Jia family. Every step if something goes wrong, the Jia family has to tell her the truth - because she still wears the title of the chief secretary of the Jia family.